*{
    margin: 0;
    padding: 0;
}
.left {
    float: left;
}
.right {
    float: right;
}
.clear {
    clear: both;
}
.box {
    background: blue;
    .tender {
        width: 50%;
        height: 100vh;
        margin: auto;
        .header {
            margin-bottom: 25px;
            input {
                width: 100%;
                color: white;
                background: black;
            }
        }
        .main {
            background: rgb(149,55,53);
            padding: 10px 0;
            ul {
                height: 100vh;
                overflow: scroll;
                li {
                    width: 80%;
                    margin:0 10%;
                    list-style: none;
                    color: white;
                    background: blue;
                    margin-bottom: 20px;
                    button {
                        background: red;
                    }
                }
            }
        }
    }
}

